单向碳纤维增强塑料磨削加工性能

The Grinding Properties of the Unidirectional Carbon Fiber Reinforced Plastics

碳纤维增强塑料因具有优异的力学性能,在航空航天等领域有重要应用。通过单向碳纤维增强塑料(CFRP)的平面磨削实验,研究了塑料增强方向对CFRP磨削加工性能的影响。研究发现,单向塑料基复合材料磨削时,由于纤维增强塑料的各向异性,磨削力与加工表面粗糙度均呈现明显的规律性。其中,在加工参数砂轮转速为1500 r/min,进给速度为5 m/min和切削深度50μm的条件下,最大和最小磨削力分别为42和10 N,而且,磨削力符合规律:法向>纵向>横向。通过对磨削加工表面显微形貌的分析,揭示了塑料基复合材料磨削微观多向材料的去除机理。研究结果不仅对拓展CFRP的应用具有重要的经济意义,同时,能够为复合材料精密加工提供一定的理论和实验支撑。

Carbon fiber reinforced plastics had important applications in aerospace and other fields due to their excellent mechanical properties.The influence of plastics reinforcement direction on the grinding performance of CFRP was studied through the surface grinding experiment of unidirectional carbon fiber reinforced plastics(CFRP).It was found that the grinding force and surface roughness of unidirectional plastic matrix composite showed obvious regularity due to the anisotropy of fiber reinforced plastics.The maximum and minimum of grinding forces were 42 N and 10 N respectively when the grinding wheel speed was 1500 r/min,the feed speed was 5 m/min and the cutting depth was 50μm.And the grinding force accorded with the law:Normal>Longitudinal>Transverse.In addition,through the analysis of grinding surface micro-morphology,the removal mechanism of micro-multidirectional material in plastic matrix composite grinding was revealed.The results not only had important economic significance for expanding the application of CFRP,but also provided theoretical and experimental support for the precision processing of composite materials.